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Reportable Segments (Policies)
9 Months Ended
Sep. 30, 2012
Segment Reporting [Abstract]  
Segment Reporting, Policy
The Company’s primary operating segments, which are individually disclosed as its reportable business segments, are:  Transportation and Storage, Gathering and Processing, and Distribution.  These operating segments are organized for segment reporting purposes based on the way internal managerial reporting presents the results of the Company’s various businesses to its chief operating decision maker for use in determining the performance of the businesses.